I don't know about persuasion. I just asked. I
think the trick is to keep asking people "Hey
Mister - can I have a go on your roof please"
and every now and then someone says "Sure,
why not?" In this case it was more
"Well, no not really ... oh alright
then." We weren't supposed to be up there
and there was no room or time to set up a tripod
which explains why you see the two hastily-taken
images here.

I am continually surprised at the uniqueness of
each of your GigaPans, and even more so this time
around. How did you gain entry to the roof of the
Guildhall. Was cml up there with you? I am truly
astonished at your art of persuasion.